corona radiata

noun

co·​ro·​na ra·​di·​a·​ta kə-ˈrō-nə-ˌrā-dē-ˈā-tə How to pronounce corona radiata (audio)
-ˈä-tə
plural coronae radiatae kə-ˈrō-(ˌ)nē-ˌrā-dē-ˈā-(ˌ)tē How to pronounce corona radiata (audio)
-ˈä-(ˌ)tē
1
: the zone of small follicular cells immediately surrounding the ovum in the graafian follicle and accompanying the ovum on its discharge from the follicle
2
: a fan-shaped mass of white matter fibers passing to and from the cerebral cortex

Word History

Etymology

borrowed from New Latin corōna radiāta "radiant crown" (crown encircled by points representing solar rays)

First Known Use

1869, in the meaning defined at sense 2

Time Traveler
The first known use of corona radiata was in 1869

Dictionary Entries Near corona radiata

Cite this Entry

“Corona radiata.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/corona%20radiata. Accessed 8 Dec. 2022.

Medical Definition

corona radiata

noun
co·​ro·​na ra·​di·​a·​ta kə-ˈrō-nə-ˌrād-ē-ˈāt-ə, -ˈät- How to pronounce corona radiata (audio)
1
: the zone of small follicular cells immediately surrounding the ovum in the graafian follicle and accompanying the ovum on its discharge from the follicle
2
: a large mass of myelinated nerve fibers radiating from the internal capsule to the cerebral cortex

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